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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/sunrpc/auth_null.c
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'net/sunrpc/auth_null.c')
-rw-r--r--net/sunrpc/auth_null.c143
1 files changed, 143 insertions, 0 deletions
diff --git a/net/sunrpc/auth_null.c b/net/sunrpc/auth_null.c
new file mode 100644
index 00000000000..9b72d3abf82
--- /dev/null
+++ b/net/sunrpc/auth_null.c
@@ -0,0 +1,143 @@
+/*
+ * linux/net/sunrpc/auth_null.c
+ *
+ * AUTH_NULL authentication. Really :-)
+ *
+ * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
+ */
+
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/module.h>
+#include <linux/in.h>
+#include <linux/utsname.h>
+#include <linux/sunrpc/clnt.h>
+#include <linux/sched.h>
+
+#ifdef RPC_DEBUG
+# define RPCDBG_FACILITY RPCDBG_AUTH
+#endif
+
+static struct rpc_auth null_auth;
+static struct rpc_cred null_cred;
+
+static struct rpc_auth *
+nul_create(struct rpc_clnt *clnt, rpc_authflavor_t flavor)
+{
+ atomic_inc(&null_auth.au_count);
+ return &null_auth;
+}
+
+static void
+nul_destroy(struct rpc_auth *auth)
+{
+}
+
+/*
+ * Lookup NULL creds for current process
+ */
+static struct rpc_cred *
+nul_lookup_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
+{
+ return get_rpccred(&null_cred);
+}
+
+/*
+ * Destroy cred handle.
+ */
+static void
+nul_destroy_cred(struct rpc_cred *cred)
+{
+}
+
+/*
+ * Match cred handle against current process
+ */
+static int
+nul_match(struct auth_cred *acred, struct rpc_cred *cred, int taskflags)
+{
+ return 1;
+}
+
+/*
+ * Marshal credential.
+ */
+static u32 *
+nul_marshal(struct rpc_task *task, u32 *p)
+{
+ *p++ = htonl(RPC_AUTH_NULL);
+ *p++ = 0;
+ *p++ = htonl(RPC_AUTH_NULL);
+ *p++ = 0;
+
+ return p;
+}
+
+/*
+ * Refresh credential. This is a no-op for AUTH_NULL
+ */
+static int
+nul_refresh(struct rpc_task *task)
+{
+ task->tk_msg.rpc_cred->cr_flags |= RPCAUTH_CRED_UPTODATE;
+ return 0;
+}
+
+static u32 *
+nul_validate(struct rpc_task *task, u32 *p)
+{
+ rpc_authflavor_t flavor;
+ u32 size;
+
+ flavor = ntohl(*p++);
+ if (flavor != RPC_AUTH_NULL) {
+ printk("RPC: bad verf flavor: %u\n", flavor);
+ return NULL;
+ }
+
+ size = ntohl(*p++);
+ if (size != 0) {
+ printk("RPC: bad verf size: %u\n", size);
+ return NULL;
+ }
+
+ return p;
+}
+
+struct rpc_authops authnull_ops = {
+ .owner = THIS_MODULE,
+ .au_flavor = RPC_AUTH_NULL,
+#ifdef RPC_DEBUG
+ .au_name = "NULL",
+#endif
+ .create = nul_create,
+ .destroy = nul_destroy,
+ .lookup_cred = nul_lookup_cred,
+};
+
+static
+struct rpc_auth null_auth = {
+ .au_cslack = 4,
+ .au_rslack = 2,
+ .au_ops = &authnull_ops,
+};
+
+static
+struct rpc_credops null_credops = {
+ .cr_name = "AUTH_NULL",
+ .crdestroy = nul_destroy_cred,
+ .crmatch = nul_match,
+ .crmarshal = nul_marshal,
+ .crrefresh = nul_refresh,
+ .crvalidate = nul_validate,
+};
+
+static
+struct rpc_cred null_cred = {
+ .cr_ops = &null_credops,
+ .cr_count = ATOMIC_INIT(1),
+ .cr_flags = RPCAUTH_CRED_UPTODATE,
+#ifdef RPC_DEBUG
+ .cr_magic = RPCAUTH_CRED_MAGIC,
+#endif
+};